The one thing I have learned on this amazing site is that even though I have owned and loved my Prostar for 11 years, I have alot to learn. The members of this site are by for the most knowledgeable Mastercraft enthusiasts I have encountered. (the humor is pretty great as well!!)

I think the powerslot is also a velvet drive. I believe the 1:1 and powerslot trannys are both made by borg warner in that year. You should look on the ID plate on top of the tranny by the dipstick and it will indicate the gear ratio. Also, why are you selling it?

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1993 Blue Stars and Stripes Prostar Powerslot 351HO
Mastercraft: Face It - If you are not a good skier behind this boat, you are not a good skier.

The identification tags says Model 10-17-004 with the 1:1 ratio. The owners manual and ID tag say Velvet Drive...so I'm going to say she is not a power slot. I'm selling because my L4 and L5 vert are getting worse with every year. I'm going to continue to ski, but very limited. This 93 makes me want to ski hard and ski all the time. When I ski behind my friends Response, I don't pull as hard.

.......... I'm going to continue to ski, but very limited. This 93 makes me want to ski hard and ski all the time. When I ski behind my friends Response, I don't pull as hard.

One thing (far-fetched) that comes to mind is that your working harder behind the 190 than the Response. Check your speed to see if the 190 is pulling correctly or if the Response is pulling you hot. Hard work usually indicates lagging in the water for one reason or another. Wake characteristics will also make for a hard pull when comparing. Technique will suffer with different wakes to navigate when on edge(s).

The 190 is typically considered an adequate tow boat, however in my younger days of skiing, I have seen (or more-so heard) Kris LaPoint pull a MC down like it had an outboard on it at 28 off for a warm-up pass... thus the R&D soon after those years, for the Powerslot (then to come).